Interesting topic. With the relative abundance of GMC 270 cid engines compared to the Chevrolet 216 / 235 / 261, that is the engine of choice here for conversions. I know of one HUP and one C60S here in Holland with GMC 270 engine swaps. Another C60L I know is fitted with what could be a 235, I will check. 
 
How does the GMC 270 compare to the Chevrolet 235 / 261, both in performance as well as modifications needed to make it fit in a CMP? 
 
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				Regards, 
Hanno
 
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